Engraving-machine



(No Model.) 2 SheetsSheet 1. J. G. KINGSBURY.

ENGRAVING MACHINE.-

No. 546,542. Patented Sept. 1'7, 1895.

' iiilllllll J WITNESSES:

A TTOHNEYS.

(No Model) v 2 Sheets-Sheet 2. J. G. KINGSBURY.

ENGRAVING MAGHINE.

N0. 546,542. Patented Sept. 17, 1895.

WITNESSES:

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AN DRLYI EGMHAM. PNUTOLHNO. WASH!" mu, Div

UNITE TATES JERE G. KINGSBURY, OF BRIDGEPORT, CONNECTICUT.

ENGRAVING-IVIIACHINE.

SPECIFICATION forming part of Letters Patent No. 546,542, datedSeptember 17, 1895. Application filed November 28,1894. Serial No. 530.3 (Nomodeh) To all whom it may concern:

Be it known that I, J ERE G. KINGSBURY, of Bridgeport, in the county ofFairfield and State of Connecticut, have invented a new and ImprovedMachine for Engraving Figures in Counting-Wheels, of which the followingis a full, clear, and exact description.

My invention relates to a machine especially adapted for cutting orengraving numbers upon a numbering or counting wheel of a numbering orcounting machine, the numbers being produced in the wheel in intaglio orsunken below the surface of the wheel; and the object of this inventionis to construct a machine by means of which the numbers or other desiredcharacters may be engraved in a wheel in a convenient and expeditiousmanner, and whereby the services of but a single attendant will benecessary, the machine accomplishing all the work of cutting andfinishing.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures and letters of referenceindicate corresponding parts in all the views.

Figure 1 is a side elevation of the improved machine. Fig. 2 is a planview thereof. Fig. 3 is a section through a portion of thedelineating-arm and its bearings. Fig. 4 is a section taken through themachine, practically on the line 4 4 of Fig. 2. Fig. 5 is a partial faceview and partial sectional viewof one of the compensating gears that maybe employed in the machine. Fig. 6 is a section through said gear, takenpractically on the line 6 6 of Fig. 5. Fig. 7 is a section through agear, substantially the same as shown in Fig. 6, the portions of thegear, however, being shown separated in this figure. Fig. 8 is aperspective view of the finished wheel. Fig. 9

represents the action of the cutting-tool on the wheel in producing aplain Gothic letter, and Fig. 10 is a similar view illustrating theaction of the cutting-tool in producing a B0- man intaglio letter.

In carrying out the invention the base 10 I of the machine is provided,preferably, near one end with standards 11, provided with suitable boxes12, and in these boxes a shaft 13 is journaled, and this shaft hassecured upon it a master or matrix Wheel A, and in the periphery of thiswheel numbers A, characters, or letters are produced in intaglio or aresunken below the surface of the wheel, these numbers or characters beingintended to be reproduced upon the periphery of the counting-wheel B,the location of which will be hereinafter described.

On the shaft 13 a gear 14 is likewise secured, which is made to meshwith a gear 18, located on a short shaft 17,journa1ed in a box 16,located on a standard 15, near one of the standards 11, and the saidgear 18 is made to mesh with another gear 23, located on a shaft 19,parallel with the master or matrix wheel shaft 13, and the said shaft 19is preferably journaled between its ends in a box 20, located upon astandard or upright 21, projected from the base, and at its rear end isjournaled in a suitable box located upon a second standard 22.

The shaft 19 carries at its inner or forward vend a blank-wheel B, uponthe periphery of which the numbers or characters are to be produced, andthe periphery of this wheel B and that of the master or matrix wheelAare substantially opposite one another. A delineating-arm C is adaptedto be swung over both the matrix or master Wheel and the wheel to beengraved or cut. This arm C is preferably made as shown in Fig.4, inwhich its front end consists of a single member terminating in a handle,and this single member extends over the periphery of the master ormatrix wheel, while the rear end of the arm is made in two members 27and 28, one below the other, the lower member 28 being longer than theupper one, and the arm is pivoted at 0', through the medium of its lowermember 28, upon the frame of the machine. The pivotal attachment of thearm C to the machine frame is preferably accomplished as shown in Figs.3 and 4, in which it will be observed that a tubular post 24 isprojected upward from the base of the machine-frame, and a shaft 25 ismade to enter the tubular post, be-

ing held fixedly therein by means of a screw or other means, and theupper end of this shaft is made tapering and is of greater diameter thanits lower portion.

The upper or tapering end of the shaft 25 loosely receives a sleeve 26,the sleeve being prevented from slipping from the shaft by flaring thehead of the latter. The rear end of the lower member 28 of thedelineating-arm is bifurcated to receive the upper portion of the saidsleeve 26,and is pivotally connected, as shown in Fig. 3, by pins orstuds 29 with opposite sides of the sleeve. Therefore thisdelineating-arm is capable not only of a Vertical movement, but of ahorizontal movement likewise. A tool holder or spindle 30 is journaledin suitable bearings in the members 27 and 28 of the delineating-arm,and the spindle carries at its lower end a cutting-tool 31, the toolbeing located exactly over the center of the peripheral portion of theblank-wheel B to be out. The spindle 30 may be adjusted vertically toregulate the cut by means of an adjusting device C of any approvedconstruction.

In the handle end of the delineating-arm the shank 33 of a tracing orguide pin 32 is located, being held in position by means of a set-screw33, as shown in Fig. 2, or the equivalent of the screw may be used. Thistracing or guide pin is located directly over the central peripheralportion of the master or matrix wheel A, as is also shown in Fig. 4.

In the operation of the machine the operator will guide the tracing-pininto the matrices or depressions A in the master or matrix wheel, and inso doing the cutting-tool 31 will reproduce the figure or character ofthe matrix-wheel upon the periphery of the wheel to be cut, but on asmaller scale, the matrix-wheel being turned by hand. Consequently,through the gearing 14, 18, and 23, heretofore described, thematrix-wheel shaft and the shaft upon which the wheel to be cut isplaced will be rotated alike. The spindle 30, carryingthe cutting-tool,is intended to be rapidly rotated, and this is accomplished by securingupon the said spindle a pulley 34, and placing guide-pulleys 35 upon asuitable bracket 36, as shown in Fig. 2, the bracket being sccured tothe U-sleeve 26, in order that the guide-pulleys shall turn with thesaid delineating-arm. The power by which the spindle 30 is rotated maybe derived from any convenient,

source. The master-wheel is usually made a predetermined number ofdiameters larger than the wheel to be cut, and the master-figures are inthe same ratio larger than the figures reproduced, and thedelineating-arm C bears the same ratio of multiplication from the pivotO to the center of the cutter-spindle and guide or tracing pin that themaster-wheel does to the wheel to be operated upon. It is not absolutelynecessary that the masterwheel should belarger than the wheel to be cut,as it is only required that the moving parts above referred to shall beso proportioned as to produce a reproduction of the characters of themaster-wheel upon the blank-wheel.

The machine will readily cut figures of the plain Gothic type, as shownin Fig. 9, in which the cutter will present a substantially flatcutting-surface to the metal, and it will likewise cut a Roman figure,as shown in Fig. 10, and in this event the master or matrix wheel hasits master or matrix figures cut deeper in the shaded portions. lVhenthis form of type is to be cut, the cutter is conical and pointed, andas the guide or tracing pin in the delineating-arm follows the deeperportions in the matrix-figures the cutter also sinks deeper in the wheelit is engraving, and on account of the conically-shaped cutter it makesa wider cut, and thereby produces a shading. Preferably, but notnecessarily, the gears 14 and 23 are com pensating-gears, and when somade are constructed as shown in Figs. 5, 6, and 7, in which it will beobserved that each of the gears is made in two sections, a thin sectiona and a thicker section a, the latter being provided with a hub a Thethicker section a is provided with two diametrically-opposite apertures40, which extend in even diameter through from. face to face, and eachof these apertures is made 9 5 to meet a recess 41, preferably ofelongated shape, the recesses being made in the inner face of the saidgear-section, as shown in Figs. 5 and 7. Each aperture 40 receives theplain surface of a screw 42, the said plain surface being of a diameterwhich will permit it to turn loosely in the aperture. The threadedsurface of the screw is reduced, forming a shoulder 42, and in thethinner section a of the gear diametrically-opposite apertures 43 10 aremade, having their walls threaded to receive the threaded section of thesaid screw, and when the screws are properly seated in the thinnersections of the gears their shoulders 42 will be flush with the innerface of 1 lo the larger gear-section a. A spring 44 is located in eachof the recesses 41, having bearing at one end against the larger sectionof the screw 42. The action of the springs 44; tends to roll the thinnerportion a of the gear I 15 in an opposite direction to the thickerportion a, and owing to the looseness of the plain portions of thescrews t2 the springs force the teeth out of line on the two sections ofthe gear. Since the center gear 18 is solid, it is no obvious the teethof the other two gears will bear on both sides of the teeth in theintermediate gear with sutfieient force to prevent lost motion, and atthe same time compensate for any small chips or imperfections due to thecutting of the teeth on the gears.

Having thus described my invention, I claim as new and desire to secureby Letters Patent-- 1. In an engraving machine the combina- 1 tion, oftwo shafts one adapted to support a master wheel and the other adaptedto support a blank wheel, means for imparting rotary movement to oneshaft, a compensating gearing between the two shafts, and a delineatingarm having a tracing point adapted to' engage the master wheel and acutting tool adapted to engage the blank wheel, substantially as setforth.

2. In a machine of the character described, a compensating gear adaptedto mesh with a solid gear, said compensating gear being made in twocircular sections, adapted to fit one against the other, one sectionbeing provided with apertures and recesses leading into said apertures,the recesses being provided with springs, and the other section be-

